Double-acting door-check.



- J. 0. REGAN.

DOUBLE ACTING DOOR GHEGK. APPLIOATION'IILBD J'AH122, 1910 Patented Jan;3,1911.

6 sHEBTssHimT 1,

- [N VENT QR YWITNESSES. I

J. G. REGAN.

DOUBLE ACTING DOOR CHECK.

APPLIUATION FILED JAN. 22, 1910.

- Patented 35111.3,1911.

J. G. REGAN. DOUBLE ACT/INGDOOB. CHECK.

APPLICATION FILED TAN. 22, 1910. 980,836.

Patented Jan. 3, 1911;

6 SHEETS-SHEET 3- INVENTOR $224M Atlomey.

J. 0. REGAN. DOUBLE AGTING DOOR CHECK.

APPLICATION FILED JAN. 22, 1910.

Patented Jan. 3, 1911.

6 SEEETS-SHEET 4.

" Altorney W ITNESSES J. G. REGAN. DOUBLE ACTING DOOR CHECK. APPLICATIONFILED 11.22, 1910.

Patented Jan. 3, 1911.

' INVENTOR u fifimw/ J. G. REGAN.

' DOUBLE ACTING DOOR CHECK.

APPLICATION FILED JAN. 22, 1910.

Patented Jan, 3, 1911.

6 SHEETSSEIIEET e.

INVENTOR whereby closing crankjshaft.

of the casing 1- UNITED STATES- CONNECTICUT, ASSIGNOR TO THE YALE PATENTOFFICE.

or STAMFORD, CONNECTICUT.

DOUBLE-ACTING DOOR-CHECK.

v Specification of Letters Patent.

, I Patented Jan. 3,1911.

'Kbplication filed January 22, 1910. 7 Serial No. 539,517.

To all whom it may concern:

Be it known that I, JOSEPH O. REGAN, of, Stamford, in the county ofFairfield and State of Connecticut, have invented certain new and usefulImprovements in Double- Acting Door-Checks; and I do hereby declare thefollowing to be a full, clear, and exactdescription of the invention,such as will enable others skilled in the art to which it appertainstomake and use the same.

y invention relates to an improvement in double acting door checks, theobject being to provide a construction wherein the movement of the 'doorin either direction, may be regulated the closing movement in A furtherobject is to provide means when the door begins to close, the actionwill be comparatively quick, dependent'on the adjustment of the primaryregulating means, While the final closing move: ment will be slower,owing to a gradual increasing resistance to the escape of the liquidfrom the'front of the piston.

A, further object is to generally simplify,

"cheapen and improve t-he'efliciency of this type of check, and withthese objects in View my invention consists in the parts andcombinations of parts and in the details of.

construction as will be more fully described and pointed out in theclaims. In the accompanying draw'in is a view infrontelevationo Fig; 2is a s, Figure 1 y the check. View in plan. Fig.3 is an end elevation.Fig. 4 is a vertical longitudinal section on the,line AB of Fig. 2 Fig.35 is a transverse vertical section on the line CD of Fig. 4. Fig. 6 isaviewin section of the casing the end cap being removed. Fig. 7 is aview on the line E-F of- Fig. 6. Figs. 8, 9 andlO areviews of a checkcasing showing a sliding valve actuated actuating the sliding valve.Figs. 13, 14 and 15 are views of the sliding valve, and Fig. 16 is aview showing the eheckapplied to a door. y p I .1 represents thechecking cylinder closed at one end and open at its other'endyandprovided in its upper surface with a thread: ed hole for the packing nut2. The open end is closed by the removable end cap 3, the latter beingelongated as shown to conform in shape and size to the closed end of thecasing. The asing ispro vided with the depressed portion 4, having adepressed seat 6 for chgcking shaft 5. The casing 1 is also-pro v1 eedge of'the latter.

The in the seat 6, and near its upper end-ir the packing nut 2, whichlatter as before exthe opening in the top of independently of the otherdirection.

plainedcloses casing 1. This nut has a central opening for the passageof the shaft, which opening is counterbored from .the top tion of thepacking ring 9, follower .10 and nut 11, which prevent they escape ofany liquid up around I "further provided with the crank 12, connected bypitman 13 with the piston" 14. The closed end of casing l constitutesthe cyllnder in which piston 14 moves, and the latter is connected tothe'pitman 13 by the p1n'15, which latter as shown in Fig. 4,'acts as aback stop for the ball valve 16 which is mounted in the port 17 inthepiston 14, and operates to close said port as the p ston 1 s moving toits forward position,-as 1n the closing movement away from its seat,when the piston 1s1moving'rearwardly or toward the shaft 5, and thuspermits the liquid in the casing to pass freely through port 17 into thecylinder in front of the-piston.

with the shaft. This may bea rotary valve as shown in Figs. '1 to 7, orit may be a sliding valve as shown in Figs. 8 to 15. The is'provided'with two ports 18 and 19 located at different levels, the port 19 being1n a plane above the port 18. cates with port 20 in casing 1, and port18 communicates with port but th'e ports 19 and 18 in valve 7 are solocated with relation to each other and to the the check is connected'rection, one of the valve ports will be in communication with its arownn fOl the reee shaft 5. The shaft 5 is Port 19 communi-- ort in thecasing. and when the door is clos ng in theopposite direction the othervalve port will be in screwed to the door adjacent to the upper shaft 5is mounted at its lower end I of the door, and moves f The double actingvalve 7 is movable rotary valve is concentric with the shaft and '21 insaid casing,

ports 20 and 21, that when the door to which is closing in one d 1-entering these ports passes through .liquid will treelv pass throughport I? to limiting" the escape of the liquid. to the portscomniunication with its port. in the casing. The valve T embraces thelower end of the shaft 5. hut. its hore, is of slightly greater diameterthan the diameter ot? the shaft. The ports 18 and 19 extend through thevalve to the bore ot the latter and the liquid same and. up around theshaft to the main liquid reservoir.

llach of the ports 2 and it, which as heilore explained conununicaterespectively with the ports it) and 18, is provided with a valve 22,located on opposite sides of the downward extension otthe casing l. asshown in Fig. i, so that the [low through each port can he regulatedindepemlenttv ot the {tow through the other. thus permitting the door toclone. in one direction by one degree of resistance. and in the oppoRitedirection by a dilterent resistance. The ports 20 and 21. extendlaterally or tmvard the door side of the rising, and both communiatewith the upwardly projecting port. 23 clearly SllOWH in Fig. 5. Thisupwardly projecting port (otnnnlnirates with the port B t which extendshorizontally forward in the side wall of the cylinder and cominuni cateswith the latter through the ports 23 and i'tt. located in a line, onr inadvance of the other. :so that in the forward or closing movement ot thepiaton toe port 2?. will he closed in the piston l t in advanre ot' theport 2t}. llith this construction. as the door begin. to close in eitherdirection. the liquid pa through both openings thus perniittine; otrapid closing movement. the speed however being dependent on thepouitioli ot the primary val 'es 212. its the piston reaches and closenport E23. the ltlt'lttllllll 11' liquid in the cylinder in advance ofthe pinion. 05* (apes through port. 2th the size of which may heregulated by the main valve 27. The casing" 1 constitute; the liquidreservoir. and From the foregoing it. will-he apparent that as the dooris opened in either direction. the

the. front of the piston. the door which swings hoth inward and outwardand which is closed by springs or spring hinges. is released, thesprings; tend to close the door against, the resistance of the liquidnow confined in the cylinder in front of the piston. As the door beginsto close the pressure ot the'liquid in front. of the piston forces ballvalve 16 to its vneat and holds it there. thus 25 and 2t). AS the pistonmoves forwardly. it closes port. thus checking; the. closing action, andlin'iiting the turther escape. ot the liquid to the single port 2t). thesize of '\vhich,ina v. as explained. he regulated by the. main valve 97.1v this onstruction l obtain a gradually llt 'l'ttlF lllgj resistance orcontrol to the closing action. by means of which i am enabled to bringthe door to a I access gradual stop at the proper point without anyoscillation Whatever of the door. lly providing the check with valvesaccessible from the outside, the closing' action can he quickly andconveniently regulated so as to provide for one degree of re tance inclosing in one directira'i, and. a tlttlOftQltt 1'0 sistance whenclosing in the opposite direction and by the elnployi'nent of the thirdor main valve the resistance to the final closing movement in bothdirections, can he under complete controlv 29 is a cap having a central.hole for the passage of the upper end of shaft; 5. [his cap rests abovethe casing 1-, outof iicentact therewith and is secured to the shaft bythe pin 30. Hinged at 31 to this cap 29 is the arm 32 which is providedon its under side with a hug 33 which rests within a recess in the cap29, the recess and hinge 31 being on opposite sides of the shaft Thisarm. therefore, is connected by the hinge, and by the lug and recess,With the cap 29, the lug and recess permitting free vertical movement ofthe free end of the arm within the necessary limite withoutdisengaging:the hug and recess. The otner free end oi this arm 3), is. prt'ividedwith a rounded knob I")? projecting upwardly. which embraced by thetorlied end 15% oi. the ecotion 235 of arm Zltl. Each member of thel'orlt coneaved to engage the side of the rminded knob forming in effecta hall. and Stuflifit joint, and the two members are held in. contact.with the knob by the screw 37. llv this means a universal joint issecured which permit. of the necesisary freedom of movement between thetwo arms without binding or straining the parts. The other member of arm36 is provided at one end with threads for engagement with a threadedhole in the forked section of the arm whereby the sections may headjusted as to length and is pivotally mounted at its oppoeite end inthe bracket 37 secured to the door frame. This bracket comprises a basemember secured to the door frame and two parallel outwardly and upwardlyprojecting meinhers to which the arm 36 is. pivoted. By inclining thesemembers slightly. upwartlly it will be seen that as the door is openedout'wardly or in a direction to carry arm Cit; under the top of the doorframe, the tree. end of Raid arm will, in its movement toward the doorframe be slightly downwardly. so that by the time it reaches the frameit. will have been lowered sufiiciently to pass under same, theuniversal connection between the two arms, and the hinge con nection ofarm 32 with the cap 29, permitting of such movement. of the arms. Thearm 36 is supported in the bracket; against, any vertical n'iovementexcept that: which is imparted to it by the inclination of the supporting member of the bracket, hence there can be no movement of the arm32 or 36 exiceptwhen the 'door is being opened or .closed. I In theconstruction shown in Figs. 8 to 15 inclusive, the, parts are identicalwith those previously described, except that a slide valve issubstituted for the rotary valve. This valve 7 is provided with twoports 18 and 19 located in different horizontal planes in order to alinewith ports 20 and '21 and also in difierent vertical planes,

so that when one port 20 or 21 is uncovered the other will be covered.This valve is located in'a chamber into which the ports 20 d 21terminate, and is actuated by two projecting ,erank pins 8 secured toshaft 5, one above the other, which pins coact with correspondinglylocated lugs 8 on the slid-- 1 ing valve 7*, so that when the crankshaft 5 is evolved by opening the door in one direction, the valve 7will be moved correspondingly, by the engagement'of one crank pin 8 onshaft 5 with one lug 8 on the sliding valve 7*. This longitudinalmovement of 25 the valve 7 brings the other lug 8 thereon in position tobe engaged by the other crank pin 8, as the shaft is rotated in theopposite direction as in closing the door, thus operating to restore thevalve toits normal position and to continue the movement 'of the valvein the event the door be opened in the opposite direction; Thesemovements of the valve bring the two openings in the latter,

into line with the c'oacting ports in the cas-. ing. The-valve isrestored to'its normal" position by the rotation-of the shaft 5 undertheinfluence of the closing springs or'spring hinges, the crank pins 8 onsaid shaft engaging the lugs 8 on the valve thus causing 40 the valveto'move in-unison with the shaft;

The opening in the 'valve extends through the latter thus permitting theliquid as it is forced from the front of the piston to flow back intothe liquid reservoir.

It is evident that changes in the construction and relative arrangementof the several- 1. In a door check, the combination with a casing andacrank shaft therein, of a' piston mounted. in the casing and connectedto the crank shaft, and a valve having two independent ports throughsame, the said valve being connected with and actuated by the crankshaft for opening and closing two ports leading from the casing in frontof the piston.

2. In a door check, the combination Wltll' 6 a casing and a crank shafttherein, of a a main valve piston mounted in the casing and connected tothe crank shaft, a valve having two independent ports through same, thesaid valve being connected with" and actuated by the crank shaft foropening and closing two ports leading from the casing in front of thepiston, and a valve in each port for regulatmg the passage of liquidthrough said ports.

3. In a door check, the combination with a casing and a'crank shafttherein, of a piston mounted in the casing and connected to tlie'crank,a double valve carried by said opened, and a valve in the openingleading from the piston chamber for regulating the escape of liquid fromsaid chamber.

5. In a door check, a checking control consisting of a port whichconnects with the liquid reservoir and with the piston chamber, saidport having two openings, into the piston chamber one in advance of theother, the forward opening being .proiyid'ed with a regulating'valve;'and also two openings into the liquid reservoir, each of said openingsbeing'further controlledby its own separate valve substantially asdescribed. v,

G. In a door check, the combination with a casing, a piston chambertherein, a piston in said chamber, and a crank shaft, of a double valvecarried by the crank for open'.

ing and closing ports leadingto the piston chamber, a'valve in each ofsaid ports for regulatin the passage of the liquid through a third valvefor regulatingthesame, an passage of liquid from the'piston chamber intosaid ports.

7 The combinationwith a casing, a crank shaft and a piston therein, andmeans connecting the crank and piston, of a rotary valve concentric withand actuated by the crank shaft and adapted to open and close a portthrough which the liquid passes from the front of the piston duringthecldsing movement of the door.

8. The combination with a casing, a crank shaft and a piston therein,and means connecting the crank and'piston, of a rotary valve concentricwith and actuat'ed by the crank shaft, the said valve having twoindependent ports adapted to register with cor responding ports incasing.

9. The combination with a casing, a crank ssmass shaft and a pistontherein, and means 0011- In testimony wuereof, I have signer thisnesting the crank and piston, of a rotary valve cnmcentriu with andactuated by the crank; shaft, the said valve having two independentports adapted to register with cor scribing witnesses.

JOSEPH (J. REGAN rspomling ports in the casing, and a Valve \Vitn esses:111 each of sand latter ports for controlhng SCHUYLER MERRHT,

thev passage of liquid through'sam-e. WARREN S. ABEL.

specification in the presenceof two sub Mv

